In 2 days I go for a vascular ultrasound. I'm thinking that I want the test done when my body is not stable so it is more likely to pick up dysfunction. I can do this by walking up a few flight of stairs or lifting something above my head. This will trigger nausea, dizziness and urge to lie down (so I don't fall down). Usually 20 minutes of horizontal time will allow my body to stabilize. Does this make sense? I don't want to unnecessarily make myself unstable if the vascular ultrasound doesn't pick up on it.